JPS62275935A - Blank conveyer of double-sided copier - Google Patents

Abstract

PURPOSE:To make a blank feeder compact and shorten time required for feeding by forming a receiving section of front and rear end guides disposed movably according to the length of copying blank. CONSTITUTION:As a front end guide 17 is moved to the re-fed blank port side, a magnet 28 approaches a front end guide sensor 27 to turn on said sensor 27. And the rotational direction of a stepping motor 31 is changed and when a predetermined number of pulses is reached, the stepping motor 31 is stopped and at the same time a solenoid 42 is turned off. Thus, in a receiving section formed of front and rear end guides 17, 18 is carried out a first time copying within a double-sided copier, and a copying blank conveyed reversely and discharged from a discharging roller is received with the end abutting against the front end guide 17.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention Field of Industrial Application The present invention provides automatic double-sided copying or composite copying 3-basis,
The present invention relates to a paper moving device for a double-sided copying machine that can perform the following operations.

Conventional technology Traditionally, double-sided copying machines that can automatically perform double-sided copying
For example, there is a copying machine with an automatic double-sided copying function as shown in Japanese Patent Application Laid-Open No. 60-3662, and the first copy paper transport mechanism is constructed as shown in Figure 4. This will be explained below with reference to the drawings.

The movable paper tray 4, which is located at the bottom of the copying machine body and moves between the paper output unit including the paper output roller 1 and the paper feed unit including the paper feed roller 2 and reversing roller 3, is The machine includes a paper storage section 6 for storing copy paper after copying has been completed from a paper exit 6, and is held on a rail 7 laid in a straight line from the paper feed section to the paper output section on the bottom of the copying machine main body. .

Furthermore, a drive wire 10 is stretched parallel to the rail 7 between drive pulleys 8 and 9 which are arranged at a distance approximately equal to the length of the rail 7, and the movable paper tray 4 is connected to the connecting portion on the side. It is connected to the drive wire 10 at.

The movable paper tray is equipped with a trailing edge regulation plate 12 in the tray 4 that regulates the trailing edge (leading edge in the direction of travel) of the copy paper that has completed the first copy according to the paper size. It is being Note that MS1 and MS2 are switches for detecting whether or not the movable paper tray 4 has reached the paper feed section or the paper output section.

The operation of the first copying sheet transport mechanism configured as described above will be described.

When you press the duplex copy switch located in the production section of the copy machine,
The movable paper tray is driven by a motor so that the rear end regulating plate 12 of the tray 4 matches the paper size. After that, MS2
When the detection switch is turned on, the cassette feed motor rotates the drive pulley 8, and the movable paper tray moves the tray 4 via the drive wire 10 to the receiving position for the first copying paper.

Here, the copy paper output from the paper output roller 1 is carried in through the paper exit 5, and is stored in the paper storage section 6 after hitting against the trailing edge regulating plate 12. After storing the paper and reading it, the sumo wrestler soto return motor rotates the drive pulley 9 so that the detection switch of the MSI is turned on, and the movable paper tray transfers the tray 4 for the first copying via the drive wire 1o. Move it to the finished paper feeding position.

Problems to be Solved by the Invention However, in the configuration as described in Section 2, the movable paper tray with the same copy paper exit has a tray that is moved between the paper output section and the paper feed section. In view of the above-mentioned problems, the present invention has a problem that the paper transport mechanism becomes large and that it takes a long time to move the paper.
To provide a paper moving device for a double-sided copying machine that reduces the time required to move paper.

Means for Solving the Problems In order to solve the above-mentioned problems, the paper moving device for a double-sided copying machine of the present invention has a main body between the first copying method paper ejection port and the paper re-feeding port of the double-sided copying machine. is provided, and the front edge guide that regulates the front six pages of the first copying method paper discharged from the ejection port is copied via the front edge guide movement amount transmission means from the state where the front edge guide detection means is turned on. When the leading edge guide moving means moves according to the length of the copied paper and the trailing edge guide detecting means is turned on, the trailing edge guide that regulates the trailing edge of the stored copied paper is moved to the rear. This configuration includes trailing edge guide moving means for moving the copied paper according to the length of the copied sheet via end guide movement amount transmitting means.

Effect of the Invention According to the above-described structure, the storage section for copied sheets is formed by the front end guide and the rear end guide, which are movably arranged in accordance with the length of the copied sheets, so that the paper moving device can be moved easily. The dimensions are close to those of the maximum copy paper size, and the distance to transport the copied paper is also shortened.

As a result, the paper moving device becomes more compact and the time required to move the paper becomes shorter.

Example Below are 7 pages for a double-sided copying machine according to an embodiment of the present invention. The paper moving device will be explained with reference to the drawings.

As shown in FIG. 3, a discharge roller 13 disposed at the bottom of the double-sided copying machine discharges the first copy paper, and a copy paper is used to make a second copy on the first copy paper. A pickup 14 and a refeed roller 16 that send out
A main body 16 is disposed between the two. The main body 16 includes a front edge guide 17 that moves from below the refeed roller 15 toward the ejection roller 13 according to the length of the copy paper, and a front edge guide 17 that moves the copy paper from below the ejection roller 13 toward the refeed roller 15. A rear end guide 18 is provided that moves according to the length, and as shown in FIG.
The rear end guide 18 is fixed via a fixing part 22 to a front end guide belt 21 which is stretched without slack over driven pulleys 19 and 20 which are arranged approximately at the center of the main body 16 at a required distance apart. It is fixed via a fixing part 26 to a rear end guide belt 25 which is stretched without slack over driven pulleys 23 and 24 which are arranged approximately at the center and separated by a required distance.

Note that a front edge guide sensor 27 that detects whether or not the front edge guide 17 is at the paper refeeding port is disposed on the paper refeeding port side of the main body 16, and a magnet 28 that operates the front edge guide sensor 27 is attached to the front edge guide 17. A rear end guide sensor 29 is attached to the main body 16 and similarly detects whether or not the rear end guide 18 is at the discharge port, and a magnet 30 is arranged on the discharge port side of the main body 16. is attached to the rear end guide 18.

A stepping motor 31 that drives the front end guide 17 and the rear end guide 18 is arranged on the side of the main body 16, and a drive belt 34 is stretched around a motor pulley 32 fixed to the output shaft of the stepping motor 31 and driven pulleys 33 and 19. There is.

As shown in FIG. 2, the driven pulleys 23 and 33 have a shape in which a pulley and a gear are integrated, and are provided on the same shaft with a spacer 36 in between. It is designed to mesh with a connecting gear 38 that rotates. The lever 36 is pivotable about a fulcrum shaft 39 fixed to the main body 16 as a fulcrum, and is attached to a tension coil spring 41 whose one end is hung on a hook pin 4o fixed to the main body 16. One end is hung on the lever 36, and a solenoid 42 is attached so as to face the tension coil spring 41, so as to pull the lever 36 against the tension coil spring 41.

The operation of the paper moving device of the double-sided copying machine configured as described above will be explained.

When a signal to start duplex copying is input from the control panel of the duplex copying machine, first it is determined whether the rear end guide sensor 29 is on or not, and if it is off, the stepping motor 31 is rotated in the direction of arrow A. . When the stepping motor 31 is rotated in the direction of arrow A, the motor pulley 3
2 also rotates in the direction of arrow A, so that the driven pulleys 33 and 19 rotate in the direction of arrow C, respectively.
and rotate in the direction of arrow B. At this time, the solenoid 42 is off, and the connecting gear 38 is connected to the tension coil spring 41.
Since the driven pulleys 33 and 23 are engaged with each other by 10 .\\, the rotation of the driven pulley 33 is transmitted to the driven pulley 23 via the connecting gear 38.

As a result, the driven pulley 23 rotates in the direction of arrow C,
Since the rear end guide belt 25 is rotated in the direction of arrow C, the rear end guide 18 moves toward the discharge port, and the magnet 3o approaches the rear end guide sensor 29, turning on the rear end guide sensor 29. Become. When the rear end guide sensor 29 is turned on, the stepping motor 31 stops.

Next, the solenoid 42 is turned on, the lever 36 is swung, and the connecting gear 38 is separated from the driven pulleys 23 and 33.

When the stepping motor 31 is rotated in the direction of arrow However, since the connecting gear 38 and the driven pulley 33 are not engaged with each other, the rotation of the driven pulley 33 is caused by the rotation of the driven pulley 2.
It doesn't get through to 3. Therefore, the rear end guide 18 is in the initially set position.

On the other hand, since the front end guide belt 21 is placed around the driven pulley 19, the front end guide belt 21 also rotates in the direction of the arrow Y according to the rotation of the driven pulley 19 in the direction of the arrow Y, and the front end guide 17 is re-supplied. Move it to the paper opening side. As the front end guide 17 moves toward the paper refeeding port, the magnet 28 approaches the front end guide sensor 27 and the front end guide sensor 27 is turned on. When the front end guide sensor 27 is turned on, the rotation direction of the stepping motor 31 changes from the direction of arrow X to the direction of arrow A. At this time, the number of pulses corresponding to the length of the copy sheet selected on the control panel is applied to the stepping motor 31. When the predetermined number of pulses is reached, the stepping motor 31 stops, and at the same time, the solenoid 42 is also turned off.

In this way, in the storage section formed by the front edge guide 17 and the rear edge guide 18, the first copy is performed in the double-sided copying machine, and the copy paper that is reversely conveyed and discharged from the discharge roller 13 is placed with the leading edge at the front edge. It is stored so as to abut against the guide 17.

Note that the distance between the front edge guide 17 and the rear edge guide 18 is normally equal to the length of the copy paper, but before storing the copy paper, the front edge guide 17 widens the interval by about 10 degrees, and after storing the copy paper, the distance increases. By shrinking each piece,
This makes paper storage smooth and ensures paper alignment.

When the number of copy sheets set on the control panel is stored, the stepping motor 31 rotates in the direction of arrow X. When the stepping motor 31 rotates in the direction of arrow X, the drive belt 34 that is attached to the motor pulley 32 also rotates in the direction of arrow X, so the driven pulleys 33 and 19 rotate in the directions of arrow Z and arrow Y, respectively. do.

At this time, the solenoid 42 is in the off state,
Since the connecting gear 38 is engaged with both the driven pulleys 33 and 23 by the tension coil spring 41, the rotation of the driven pulley 33 is transmitted to the driven pulley 23 via the connecting gear 38.
can be conveyed to. When the driven boob IJ-23 rotates in the direction of arrow Z, the trailing edge guide 13 and the guide belt 25 also rotate in the direction of arrow Z, so that the trailing edge guide 18 moves toward the paper refeeding port.

On the other hand, when the driven pulley 19 rotates in the direction of arrow Y,
Since the front end guide belt 21 also rotates in the direction of arrow Y,
The front end guide 17 moves toward the paper refeeding port.

In other words, the trailing edge guide 18 and the front edge guide 17 move in conjunction with each other toward the paper refeeding port to prevent multiple sheets of copying paper from stacking up unevenly when the trailing edge guide 18 is pushing the copying paper. .

The stepping motor 31 is given a number of pulses corresponding to the length of the copy sheet selected on the control panel. Therefore, when the predetermined number of pulses is reached, the stepping motor 31 stops, but at that time the front edge guide sensor 27 is turned on, making it possible to refeed the copy paper.

Furthermore, the front end guide 17 is tilted at the same time as the front end guide sensor 27 is turned on, so that it does not interfere with the progress of the copy paper during refeeding.

14'. Effects of the Invention As described above, the present invention provides a main body provided between the ejection port and refeed port for the first copy paper of a double-sided copying machine, and Detects that the front edge guide that regulates the front edge of the second copy of the next paper, the rear edge guide that regulates the rear edge of the stored first copy of the next paper, and that the front and rear edge guides are at their respective origin positions. a front end and rear end guide detection means for moving the front end and rear end guides in accordance with the length of the first copying paper; and a front end and rear end guide movement amount transmitting means for connecting the rear end guide, so that the storage section for the first copy paper can be moved in accordance with the length of the copy paper. Since it can be formed with a front end guide and a rear end guide, the dimensions of the paper moving device become close to the dimensions of the maximum copy paper size, and the distance for transporting the copied paper can also be shortened.

As a result, the paper moving device has become more compact, with 15
This has the effect of shortening the processing time from when the copied paper is stored until it can be re-fed.

[Brief explanation of drawings]

FIG. 1 is a plan view of a paper moving device of a double-sided copying machine according to an embodiment of the present invention, FIG. 2 is an enlarged side view of main parts of the double-sided copying machine, FIG. 3 is a schematic side view of the same, and FIG. FIG. 2 is a side view of main parts of a conventional double-sided copying machine. 17... Front end guide, 18... Rear end guide, 21... Front end guide belt, 25...
・・Rear end guide belt, 23. 33 ・・・Followed boot IJ-131 ・・・Stepping motor, 34
...Drive belt, 38...Connection gear.

Claims (3)

[Claims] (1) A main body installed between the ejection port and the paper re-feed port for the first copied paper of a double-sided copying machine, and a main body arranged to be movable by a required amount from the paper re-feed port toward the ejection port. The first
a front edge guide that regulates the front edge of the first copy sheet; and a rear end that is movable by a required amount from the discharge port to the paper refeed port and that regulates the rear end of the first copy sheet. a guide, a front end guide detection means installed near the paper refeeding port of the main body and detecting that the front end guide is at the original position, and a front end guide detection means installed near the ejection port of the main body and detecting that the rear end guide is at the original position. a rear end guide detection means for detecting the movement of the front end guide, a front end guide movement amount transmission means for regulating the movement of the front end guide, a rear end guide movement amount transmission means for regulating the movement of the rear end guide, and the front end guide movement amount. front edge guide moving means for moving the front edge guide in accordance with the length of the first copied paper via a transmission means; A paper moving device for a double-sided copying machine, comprising a trailing edge guide moving means for moving the paper according to the length of the paper that has been copied a second time. (2) The front end guide moving means and the rear end guide moving means are
2. A paper moving device for a double-sided copying machine as claimed in claim 1, characterized in that it is comprised of one driving means and one connecting means. (3) When the connecting means stores the first copied paper discharged from the output port of the double-sided copying machine, the front end guide is moved independently, and the first copied paper is re-feeded. 3. The sheet moving device for a double-sided copying machine according to claim 2, wherein the connecting means has a control means for interlocking the front end guide and the rear end guide when moving the sheet toward the mouth.